* {
    margin: 0;
    padding: 0;
  }
  .main_body{
   background-color: rgb(90, 92, 207);
  }
  #myImg {
    height: 400px;
    width: 500px;
  }
  .center {
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
    border: 5px solid #FFFF00;
    padding: 10px;
  }
  .div_btn{
    width: 100%;
    display: flex;
    justify-content: center;
  }
  .btn{
    background-color: #4CAF50;
    border: none;
    color: white;
    padding: 15px 32px;
    text-align: center;
    text-decoration: none;
    display: inline-block;
    font-size: 25px;
    margin: 4px 2px;
    cursor: pointer;
  }